JPH0367033B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to electronic printing devices for printing using replaceable type elements such as electronic typewriters and word processors, and more particularly, to
Alternatively, the present invention relates to an electronic printing device such as a CRT having a display means capable of displaying input characters and numbers. 2. Description of the Related Art Electronic printing devices such as conventional electronic typewriters and word processors that print using replaceable type elements usually have a plurality of replaceable type elements with different fonts. For example, in word processors, 10 point and 12 point print heads are used interchangeably, and in electronic typewriters, symbols can be printed in addition to standard type such as elite and pica. Printing can be done by replacing the element. With such electronic printing devices, it is not possible to know the type of type element currently installed or the font it has until the actual printing is performed and the printed characters are confirmed. Therefore, type elements different from the desired type may be installed. In the case where printing is done, there are disadvantages in that printing paper is wasted and trial printing must be performed prior to printing. Therefore, the present invention was made in order to eliminate the drawbacks of the conventional electronic printing device as described above.
It is an object of the present invention to provide an electronic printing device having a display means that can reliably inform an operator of the type of type element installed. In order to achieve the above object, an electronic printing device according to the present invention includes a recording means for recording using printed characters, a mounting part to which the printed characters used for recording by the recording means are replaceably mounted, and a mounting part mounted on the mounting part. a donut-shaped detection member having two notches so that the angle formed by a straight line from the center to the notch varies depending on the type of the type; a detecting means for detecting the type of the printed characters mounted on the mounting portion by detecting an angle formed by a straight line from the center of the donut-shaped member to the two notches; and a notification means for notifying a detection result detected by the means, and the recording means, the mounting part, the donut-shaped member to be detected, and the detection means, the display means for displaying the input record information, and the and switching means for switching the typeface displayed by the display means so that the detection result is displayed on the display means using the same typeface as the typeface mounted on the mounting portion detected by the detection means. . Hereinafter, the present invention will be explained in detail based on embodiments shown in the drawings. However, in the following embodiments, an electronic typewriter using a petal-shaped type wheel as a type element will be explained as an example. FIG. 1 is a block diagram showing a schematic configuration of a control device for an electronic printing device according to the present invention. In the figure, the reference numeral 1 is a keyboard for inputting desired print characters, numbers, symbols, etc. It consists of character keys from A to Z, 1
Numerical keys from ~0 and various other function keys are arranged. Information entered from this keyboard is sent to the MPU (microprocessor) 2, which controls the rotation amount of the petal-shaped type wheel provided in the printer 5 or the printing pressure of the printing hammer via the printer driver 4. to perform the desired printing. This MPU 2 is a ROM in which microinstruction information for sequential control is stored as a digital signal, such as a typeface table for converting information regarding the type of type element 9 inputted from the typeface sensor 3 into typeface information. It consists of an arithmetic section that processes information according to the information from the ROM, a group of registers that hold numerical data, an adder for executing operations, and a control section that performs other controls. The MPU 2 not only controls printing via the printer driver 4, but also has a display control system consisting of a character generator section 6 and a display driver 7. is converted into dot information by referring to the internal character generator in the character generator section 6, and then displayed on the CRT, via the display driver 7.
Alternatively, it is displayed on a display 8 composed of an LCD or the like. Furthermore, the MPU 2 has a sensor system including a font sensor 3 that detects the type of type element and a cover switch 14 that detects the opening and closing of a housing cover that is opened and closed when replacing the type element, which will be described later. FIGS. 2A and 2B show the configuration of the type element 9 constituted by the petal type type wheel and the method of detecting the type of element of the typeface sensor 3. In FIG. 2A, the type elements 9 are petal-shaped, and the type 9' is integrally formed at the tip of a plurality of spokes arranged radially around the outer periphery of a circular rim made of flexible material such as plastic. has been done. Further, a black tape 10 or the like that does not reflect light is attached to the rim portion of the type element 9, and white portions are provided at intervals of a predetermined angle α depending on the font or type of the type element 9. This angle α
The relationship between the type and type of type element 9 may be set, for example, as shown in Table 1 below.

[Table] Here, the angle of this white part is set for each typeface in 45° increments, and this white part is set from the light source 3' as shown in the side view of the type element 9 in Figure 2B. The emitted light is read by a typeface sensor 3 composed of a CDS or the like. This table is stored as digital information in the POM of the MPU 2, which allows the MPU 2 to detect the type of type element 9. Next, the mounting structure of the cover switch 14 is
As shown in the figure. FIG. 3 shows a schematic cross-section of the electronic printing device of the present invention, and a keyboard 1 is provided on the inclined upper surface on the near side (left side in the figure) toward the operator of the device. is provided with a cover 12 that can be opened and closed when replacing the type element 9 of the printer 5, which is provided opposite the platen 16, and is actuated by a protrusion 13 provided at the tip of this cover 12. (In this embodiment, when the protrusion 13 is closed)
ON), a cover switch 14 such as a micro switch is provided inside the device. The operation of the above configuration will be explained in detail below with reference to FIG. First, when the entire device is powered on, MPU2
In step 1, the angle α of the white part 10' of the type element 9 is read through the font sensor 3, and in step 2, the type of type element 9 installed is detected by comparing it with the built-in font table. This font information is transferred to the character generator section 6. Next, in step 3, the MPU 2 checks the state of the cover switch 14, and the cover 12 is closed.
If the cover switch 14 is ON, the process moves to step 5 and accepts key input from the keyboard 1. Next, in step 6, the MPU 2 receives the input character information according to the operator's input from the keyboard 1. The data is transferred to the character generator section 6. In response to this, the character generator unit 6 inputs the font information sent from the MPU 2 as a pica if it is a pica or an italic if it is an italic to a display device 8 such as a CRT via a display driver 7. Display characters. This allows the operator to easily confirm the type of type element 9 currently installed by looking at the screen of the display 8. If it is determined in step 3 that the cover 12 is open, it is assumed that the operator is attempting to replace the type element 9, and no key input is accepted, and in step 4, the cover switch with the cover 12 closed is Wait until 14 turns ON and return to step 1. In addition to using a high-resolution display such as a CRT as in the above embodiment, if you are using a low-resolution evaluator such as an LCD and lack the ability to display different fonts, for example, As shown in Figure 5A and B, the typeface of the currently installed type element is displayed by changing the dot display mode, such as displaying one dot on the display character for Pica and two dots for Elite. You can also do this. In addition to displaying the font by changing the font, it is of course possible to display the font name in the corner of the display screen, or by using a light-emitting device installed next to the keyboard. be. Further, in the above embodiments, the type elements are petal-shaped as an example, but it goes without saying that the present invention can be applied to other types of elements. As is clear from the above description, the electronic printing device of the present invention includes a recording means for recording using printed characters, a mounting section for replacing the printed characters used for recording by the recording means, and a mounting section for replacing the printed characters used for recording by the recording means. In order to notify the type of the printing type attached to the part, the donut-shaped detection object has two notches so that the angle formed by the straight line from the center to the notch differs depending on the type of the printing type. detecting means for detecting the type of printed characters mounted on the mounting portion by detecting an angle between the member and a straight line from the center of the donut-shaped detection member to the two notches; , a configuration having a notification means for notifying the detection result detected by the detection means, and a display means for displaying the recording means, the mounting part, the donut-shaped member to be detected, the detection means, and the input record information. and a switching means for switching the typeface displayed by the display means so that the detection result is displayed on the display means using the same typeface as the typeface mounted on the mounting portion detected by the detection means. The configuration was adopted. Therefore, the type of type currently installed can be reliably detected and notified to the operator, and there is no need for typos or trial printing unlike in conventional type replaceable type electronic printing devices. Moreover, the donut-shaped member to be detected can be installed very easily by simply aligning the center without considering the distance from the home position, etc., and the production process of the electronic printing device can be shortened. Furthermore, when detecting and notifying the type of typeface currently attached, the same typeface as the typeface is displayed on the display means, providing an excellent effect in that the operator can visually recognize the actual typeface.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a control circuit of an electronic printing device of the present invention, FIG. 2A is an explanatory diagram showing the structure of a type element of an electronic printing device of the present invention, and FIG. 3 is a schematic sectional view of the electronic printing device of the present invention; FIG. 4 is a flowchart explaining the operation of the electronic printing device of the present invention; FIG. 5 A and FIG. 5B are explanatory diagrams illustrating the operation of the electronic printing apparatus of the present invention. 1...keyboard, 2...MPU, 3...font sensor,
5...Printer, 6...Character generator section,
8...Display device, 9...Print element, 10...Black tape, 12...Cover, 13...Protrusion, 14...Cover switch.

Claims (1)

[Scope of Claims] 1. Recording means for recording using printed characters; A mounting part to which the printed characters used for recording by the recording means are attached replaceably; and notification of the type of the printed characters mounted on the mounting part. In order to
A donut-shaped member to be detected having notches at different locations, and an angle formed by a straight line from the center of the donut-shaped member to the two notches to be attached to the mounting portion. What is claimed is: 1. An electronic printing device characterized by comprising: a detection means for detecting the type of the printed characters that are detected by the detection means; and a notification means for notifying a detection result detected by the detection means. 2. A recording means for recording using print; a mounting section to which the print used for recording by the recording means is replaceably mounted; a display means for displaying input recorded information; and a display means mounted to the mounting section. In order to notify the type of type, the angle formed by the straight line from the center to the notch is different depending on the type of type.
A donut-shaped member to be detected having notches at different locations, and an angle formed by a straight line from the center of the donut-shaped member to the two notches to be attached to the mounting portion. a detection means for detecting the type of the printed characters mounted on the mounting portion; and a display means configured to display the detection result on the display means using the same font as the printed characters detected by the detection means and mounted on the mounting portion. An electronic printing device comprising: switching means for switching the font to be displayed;